<?php

namespace GamesBundle\Services;
use GamesBundle\Services\ContainerAware;

/**
 *
 * 获取远程数据方法
 * @author  coffey  <coffey@nligo.com>
 * @time    2017/2/21
 */
class CurlGetData extends ContainerAware
{

    /**
     * @author  coffey
     *
     * curl 函数
     * @param string $url 请求的地址
     * @param string $type POST/GET/post/get
     * @param array $data 要传输的数据
     * @param string $err_msg 可选的错误信息（引用传递）
     * @param int $timeout 超时时间
     * @param array 证书信息
     */
    function curl($url, $type, $data = false, &$err_msg = null, $timeout = 20, $cert_info = array())
    {
        $type = strtoupper($type);
        if ($type == 'GET' && is_array($data)) {
            $data = http_build_query($data);
        }

        $option = array();

        if ( $type == 'POST' ) {
            $option[CURLOPT_POST] = 1;
        }
        if ($data) {
            if ($type == 'POST') {
                $option[CURLOPT_POSTFIELDS] = $data;
            } elseif ($type == 'GET') {
                $url = strpos($url, '?') !== false ? $url.'&'.$data :  $url.'?'.$data;
            }
        }

        $option[CURLOPT_URL]            = $url;
        $option[CURLOPT_FOLLOWLOCATION] = TRUE;
        $option[CURLOPT_MAXREDIRS]      = 4;
        $option[CURLOPT_RETURNTRANSFER] = TRUE;
        $option[CURLOPT_TIMEOUT]        = $timeout;

        //设置证书信息
        if(!empty($cert_info) && !empty($cert_info['cert_file'])) {
            $option[CURLOPT_SSLCERT]       = $cert_info['cert_file'];
            $option[CURLOPT_SSLCERTPASSWD] = $cert_info['cert_pass'];
            $option[CURLOPT_SSLCERTTYPE]   = $cert_info['cert_type'];
        }

        //设置CA
        if(!empty($cert_info['ca_file'])) {
            // 对认证证书来源的检查，0表示阻止对证书的合法性的检查。1需要设置CURLOPT_CAINFO
            $option[CURLOPT_SSL_VERIFYPEER] = 1;
            $option[CURLOPT_CAINFO] = $cert_info['ca_file'];
        } else {
            // 对认证证书来源的检查，0表示阻止对证书的合法性的检查。1需要设置CURLOPT_CAINFO
            $option[CURLOPT_SSL_VERIFYPEER] = 0;
        }

        $ch = curl_init();
        curl_setopt_array($ch, $option);
        $response = curl_exec($ch);
        $curl_no  = curl_errno($ch);
        $curl_err = curl_error($ch);
        curl_close($ch);

        // error_log
        if($curl_no > 0) {
            if($err_msg !== null) {
                $err_msg = '('.$curl_no.')'.$curl_err;
            }
        }
        return $response;
    }
}